Measuring Visceral Fat with Water-Selective Suppression Methods (SPIR, SPAIR) in Patients with Metabolic Syndrome
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- TANAKA Shigeko
- Department of Radiology, Wakakusa Daiichi Hospital
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- YOSHIYAMA Minoru
- Department of Internal Medicine and Cardiology, Graduate School of Medicine, Osaka City University
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- IMANISHI Yukihiro
- Department of Gastroenterology, Wakakusa Daiichi Hospital
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- TERAGAKI Masakazu
- Department of Cardiology, Wakakusa Daiichi Hospital
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- KASAYUKI Noriaki
- Department of Cardiology, Wakakusa Daiichi Hospital
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- SHIMIZU Naruhito
- Department of Cardiology, Wakakusa Daiichi Hospital
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- NAKAHIRA Koichi
- Section of Radiology, Division of Medical Technologies, Wakakusa Daiichi Hospital
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- HANAKI Takashi
- Section of Radiology, Division of Medical Technologies, Wakakusa Daiichi Hospital
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- NAITO Yukari
- Department of Radiology, Wakakusa Daiichi Hospital
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- TANAKA Masahiro
- Department of Radiology, Osaka City General Hospital
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- INOUE Yuichi
- Department of Radiology, Graduate School of Medicine, Osaka City University
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We attempted to measure the area and volume of visceral fat using magnetic resonance (MR) imaging to avoid radiation exposure. We used water suppression-spectral attenuation with inversion recovery (WS-SPAIR) as prepulses and conducted T1 high-resolution isotropic volume examination (THRIVE).1 Image processing software can be used to estimate the area and volume of fat and separate the fat and water signals at a visually optimal threshold in the MR image, which requires contrast enhancement between intestinal contents and visceral fat. In 14 volunteers, we evaluated WS-SPAIR and water suppression-spectral presaturation with inversion recovery (WS-SPIR) with respect to the relationship between the flip angle of THRIVE and signal contrast. We used flip angles of 5°, 10°, and 20°. The minimum threshold that allowed exclusion of intestinal contents from the masked region was determined for each technique. The volume and area of the masked region, which included subcutaneous fat, were measured at the umbilicus level. Both volume and area increased with a smaller flip angle. The masked region was larger with WS-SPIR-THRIVE (flip angle 5°). The size of the masked region was determined according to the minimum threshold that allowed exclusion of the intestinal contents from the masked region, expressing the contrast between the intestinal contents and fat in a relative manner. It was speculated that by separating the signals at the threshold, WS-SPIR-THRIVE (flip angle 5°) was a more suitable technique for measuring the area and volume of visceral fat.<br>
収録刊行物
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- Magnetic Resonance in Medical Sciences
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Magnetic Resonance in Medical Sciences 6 (3), 171-175, 2007
日本磁気共鳴医学会
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詳細情報 詳細情報について
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- CRID
- 1390001205195076736
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- NII論文ID
- 10019798255
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- NII書誌ID
- AA11648770
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- ISSN
- 18802206
- 13473182
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- 本文言語コード
- en
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- データソース種別
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- JaLC
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- 抄録ライセンスフラグ
- 使用不可